[Qgis-user] Making border lines disappear

[Andreas Neumann]

Hi,

This is an anti aliasing issue that many rendering libraries have. I
doubt there is much the QGIS developers can do. It is beyond the control
of the QGIS developers and an upstream problem of the rendering in the
qt-library.

The AGG rendering library solved this issue: see
http://www.antigrain.com/screenshots/ and search for "adjacent polygons"
in the text.

I will forward this to the QGIS developers list.

Andreas

Am 30.07.2014 14:18, schrieb Jonathan Moules:
> Hi Frank,
> Thanks for confirming. Dissolving was the plan that the user was going
> to end up trying.
> For those interested, it's on the tracker as: 
> http://hub.qgis.org/issues/10984
> 
> Cheers,
> Jonathan
> 
> 
> On 30 July 2014 12:07, Frank Sokolic <sokolic at worldonline.co.za
> <mailto:sokolic at worldonline.co.za>> wrote:
> 
>     Hi Jonathan,
> 
>     I've been struggling with this too. Even if you set Border Width to
>     zero the borders are faintly visible. I hack I've used occasionally
>     is to dissolve the polygons using whatever attribute you're
>     categorising by but this is a far from ideal solution.
> 
>     Frank.
>     ------------------------------------------------------------------------
>     *From:* jonathanmoules at warwickshire.gov.uk
>     <mailto:jonathanmoules at warwickshire.gov.uk>
>     *Sent:* 2014/07/30 12:53:25 PM
>     *To:* qgis-user at lists.osgeo.org <mailto:qgis-user at lists.osgeo.org>
>     *Cc:*
>     *Subject:* RE: [Qgis-user] Making border lines disappear
>     ------------------------------------------------------------------------
>     Hi List,
>     Using 2.4, how do you make borders on polygons invisible? Apparently
>     this worked fine in 2.2, but doesn't seem to be possible with 2.4.
> 
>     Using the standard Simple Fill.
> 
> 
>     Border style: No Pen:
>     Inline images 1
> 
>     Border Style: Solid Line; Border: Dark green (second across from the
>     Black) (fill: Same dark green):
> 
>     Inline images 2
>     If you look closely you'll see white lines.
> 
>     Anyone else seeing this? It was brought up by one of our more
>     observant users.
> 
>     Cheers,
>     Jonathan
> 
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